mysql初体験
3634 ワード
sudo apt-get update sudo apt-get install mysql-server
サービスの開始
sudo service mysql status sudo service mysql start
バージョンの検証
$ mysqladmin --version
mysqladmin Ver 8.42 Distrib 5.5.54, for debian-linux-gnu on x86_64
rootパスワードの設定:
/etc/mysqlでdebian.cnfを見つけ、管理アカウントパスワードを表示します.$ sudo cat debian.cnf
# Automatically generated for Debian scripts. DO NOT TOUCH!
[client]
host = localhost
user = debian-sys-maint
password = VUESAzkIpf7ckpnA
socket = /var/run/mysqld/mysqld.sock
[mysql_upgrade]
host = localhost
user = debian-sys-maint
password = VUESAzkIpf7ckpnA
socket = /var/run/mysqld/mysqld.sock
basedir = /usr
mysqlにログインするには:
$ mysql -u debian-sys-maint -p
Enter password:
ERROR 1045 (28000): Access denied for user 'debian-sys-maint'@'localhost' (using password: YES)
zhanghaipeng@zhanghaipeng-Lenovo-K2450:/etc$ mysql -u debian-sys-maint -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 61
Server version: 5.5.54-0ubuntu0.14.04.1 (Ubuntu)
Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
rootパスワードの変更:
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
+--------------------+
3 rows in set (0.00 sec)
mysql> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> select host,user,password from user;
+---------------------------+------------------+-------------------------------------------+
| host | user | password |
+---------------------------+------------------+-------------------------------------------+
| localhost | root | *9D244EF0DC2E16FC2EF469372F5E24ED87C94ECF |
| zhanghaipeng-lenovo-k2450 | root | *9D244EF0DC2E16FC2EF469372F5E24ED87C94ECF |
| 127.0.0.1 | root | *9D244EF0DC2E16FC2EF469372F5E24ED87C94ECF |
| ::1 | root | *9D244EF0DC2E16FC2EF469372F5E24ED87C94ECF |
| localhost | debian-sys-maint | *B885D6BF31D9DBCCD1ACA8EBE20A5D381FE0CDAB |
+---------------------------+------------------+-------------------------------------------+
5 rows in set (0.00 sec)
mysql> update user set password=password('***') where user='root';
Query OK, 0 rows affected (0.00 sec)
Rows matched: 4 Changed: 0 Warnings: 0
mysql>
現在のログインユーザーを終了し、rootアカウントでログインし直しました.
$ mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 63
Server version: 5.5.54-0ubuntu0.14.04.1 (Ubuntu)
Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>